Start Up ERROR on Lubuntu 18.04.3

When I boot up or restart, I receive one ERROR notification saying ¨check your system log¨
When I go to system log, this is what I see:

04:43:50 kernel: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] ERROR CPU pipe A FIFO underrun

Can anyone explain what is happening here, and how to correct?

Put GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash intel_iommu=on,igfx_off”

in /etc/default/grub

then do a sudo update-grub and try

Is a kernel bug.

That worked. Thanks for your help.

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